Royal Institution2009-07-282009-07-282009-07-28http://hdl.handle.net/10222/12017One letter, one page ; One letter, one pageTwo letters to James Dinwiddie from the Royal Institution dated Jan 1 and May 31, 1811.enGuillemardScientific and Literary CommitteeJames DinwiddieAuriolMechanicsMathematicsMeeting1811Royal InstitutionMechanical InventionsText